crates/api_crud/src/post/update.rs

   1 use crate::PerformCrud;
   2 use actix_web::web::Data;
   3 use lemmy_api_common::{
   4   context::LemmyContext,
   5   post::{EditPost, PostResponse},
   6   request::fetch_site_data,
   7   utils::{check_community_ban, local_site_to_slur_regex, local_user_view_from_jwt},
   8   websocket::UserOperationCrud,
   9 };
  10 use lemmy_db_schema::{
  11   source::{
  12     actor_language::CommunityLanguage,
  13     local_site::LocalSite,
  14     post::{Post, PostUpdateForm},
  15   },
  16   traits::Crud,
  17   utils::{diesel_option_overwrite, naive_now},
  18 };
  19 use lemmy_utils::{
  20   error::LemmyError,
  21   utils::{
  22     slurs::check_slurs_opt,
  23     validation::{clean_url_params, is_valid_body_field, is_valid_post_title},
  24   },
  25   ConnectionId,
  26 };
  27
  28 #[async_trait::async_trait(?Send)]
  29 impl PerformCrud for EditPost {
  30   type Response = PostResponse;
  31
  32   #[tracing::instrument(skip(context, websocket_id))]
  33   async fn perform(
  34     &self,
  35     context: &Data<LemmyContext>,
  36     websocket_id: Option<ConnectionId>,
  37   ) -> Result<PostResponse, LemmyError> {
  38     let data: &EditPost = self;
  39     let local_user_view = local_user_view_from_jwt(&data.auth, context).await?;
  40     let local_site = LocalSite::read(context.pool()).await?;
  41
  42     let data_url = data.url.as_ref();
  43
  44     // TODO No good way to handle a clear.
  45     // Issue link: https://github.com/LemmyNet/lemmy/issues/2287
  46     let url = Some(data_url.map(clean_url_params).map(Into::into));
  47     let body = diesel_option_overwrite(&data.body);
  48
  49     let slur_regex = local_site_to_slur_regex(&local_site);
  50     check_slurs_opt(&data.name, &slur_regex)?;
  51     check_slurs_opt(&data.body, &slur_regex)?;
  52
  53     if let Some(name) = &data.name {
  54       is_valid_post_title(name)?;
  55     }
  56
  57     is_valid_body_field(&data.body)?;
  58
  59     let post_id = data.post_id;
  60     let orig_post = Post::read(context.pool(), post_id).await?;
  61
  62     check_community_ban(
  63       local_user_view.person.id,
  64       orig_post.community_id,
  65       context.pool(),
  66     )
  67     .await?;
  68
  69     // Verify that only the creator can edit
  70     if !Post::is_post_creator(local_user_view.person.id, orig_post.creator_id) {
  71       return Err(LemmyError::from_message("no_post_edit_allowed"));
  72     }
  73
  74     // Fetch post links and Pictrs cached image
  75     let data_url = data.url.as_ref();
  76     let (metadata_res, thumbnail_url) =
  77       fetch_site_data(context.client(), context.settings(), data_url).await;
  78     let (embed_title, embed_description, embed_video_url) = metadata_res
  79       .map(|u| (Some(u.title), Some(u.description), Some(u.embed_video_url)))
  80       .unwrap_or_default();
  81
  82     let language_id = self.language_id;
  83     CommunityLanguage::is_allowed_community_language(
  84       context.pool(),
  85       language_id,
  86       orig_post.community_id,
  87     )
  88     .await?;
  89
  90     let post_form = PostUpdateForm::builder()
  91       .name(data.name.clone())
  92       .url(url)
  93       .body(body)
  94       .nsfw(data.nsfw)
  95       .embed_title(embed_title)
  96       .embed_description(embed_description)
  97       .embed_video_url(embed_video_url)
  98       .language_id(data.language_id)
  99       .thumbnail_url(Some(thumbnail_url))
 100       .updated(Some(Some(naive_now())))
 101       .build();
 102
 103     let post_id = data.post_id;
 104     let res = Post::update(context.pool(), post_id, &post_form).await;
 105     if let Err(e) = res {
 106       let err_type = if e.to_string() == "value too long for type character varying(200)" {
 107         "post_title_too_long"
 108       } else {
 109         "couldnt_update_post"
 110       };
 111
 112       return Err(LemmyError::from_error_message(e, err_type));
 113     }
 114
 115     context
 116       .send_post_ws_message(
 117         &UserOperationCrud::EditPost,
 118         data.post_id,
 119         websocket_id,
 120         Some(local_user_view.person.id),
 121       )
 122       .await
 123   }
 124 }